Playing outdoors is one of the joys of childhood. It’s so much fun, in fact, that kids often can’t be bothered to stop for a drink of water.

Dehydration in Children

Children’s bodies don’t adjust as well to high temperatures as they will later in life, so the risk of dehydration, heat exhaustion, and heat stroke is greater for children.

The younger the child, the greater the risk.

Very young children may not have the language skills to explain what’s causing them discomfort when they’re thirsty, and at that age they are not usually in control of whether they stay outside or go in.

Even older children and teens may become so involved in a game that they don’t realize how thirsty they have become.

Signs of Dehydration

Children aren’t likely to recognize the warning signs of dehydration—they’re too busy having fun. So it’s up to parents, coaches, and caregivers to monitor them and watch for the warning signs before trouble occurs.

Keep an eye out for:

• unsteadiness
• dizziness
• nausea
• headache
• tiredness
• flushed skin
• confusion
• cramps
• irritability

In addition, children may take fewer bathroom breaks (or have fewer wet diapers).

Treating Dehydration

• Take Shelter

  If you notice any symptoms of dehydration, take the child out of the sun and into a cool place as soon as possible.

• Rehydrate

  Encourage the child to sip cool liquids. Water is a great choice.

  According to one study, orange juice remains in the body slightly longer than water, and three other liquids—fat-free milk, whole milk, and an oral rehydration solution—stay in the body considerably longer than water.

• Avoid Soda

  Never give a dehydrated kid soda: caffeine and sugar drain water from the body.

When to Hydrate, and How Much to Drink

Heat-induced illness is preventable, says the American Academy of Pediatrics (AAP).

Children should drink plenty of fluids before, during, and after playing or exercising.

• For periods of time under an hour, water is usually sufficient.
• If children are playing or exercising for longer, try an electrolyte drink like a low-sugar sports drink or electrolyte tablet added to water.

One DIY electrolyte option is a chilled serving of coconut water. 

Other Tips for Staying Cool

• Beat the Sun and Heat

  Have children practice sports early in the day, before the heat builds, or later, when it’s cooler.

• Dress Lightly

  Dress them in lightweight, light-colored clothing.

• Get Acclimated

  Young athletes should acclimate to the heat over the course of two weeks by engaging in workouts that slowly increase in intensity and duration.

  For sports that require bulky equipment, children should practice in light clothing for several days to get acclimated, and avoid heavy gear on hot days.

• Drink Up!

  On hot days, children engaged in sports need a drink about every 20 minutes.

  The AAP recommends at least 5 ounces for those under 90 pounds and 9 ounces for those weighing more than 130 pounds. (One ounce equals approximately two kid-size gulps.)